Development of nanofiltration dual-layer hollow fiber membranes for forward osmosis

Forward osmosis (FO) has been attracting growing attention in many applications in the recent years. FO has not been as well-studied as compared to pressure driven membrane process. The main advantages of FO include low or no hydraulic pressure, low tendency of fouling and high water recovery. The k...

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Main Author: Tan, Si Hui.
Other Authors: Wang Rong
Format: Final Year Project
Language:English
Published: 2012
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Online Access:http://hdl.handle.net/10356/49444
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-494442023-03-03T16:52:00Z Development of nanofiltration dual-layer hollow fiber membranes for forward osmosis Tan, Si Hui. Wang Rong School of Civil and Environmental Engineering DRNTU::Engineering::Environmental engineering::Water treatment Forward osmosis (FO) has been attracting growing attention in many applications in the recent years. FO has not been as well-studied as compared to pressure driven membrane process. The main advantages of FO include low or no hydraulic pressure, low tendency of fouling and high water recovery. The key challenges faced by FO are draw solution and the need for new membrane development. Therefore, the current study aims to fabricate nanofiltration dual-layer hollow fiber membranes suitable for FO applications.The provided polyamide-imide (PAI)/ polyethersulfone (PES) hollow fiber ultrafiltration (UF) substrates were cross-linked with 1% wt polyethylenimine (PEI) of different molecular weight at 70ᵒC for 75 mins to prepare the NF membrane. The PEI modified membranes were further modified with cross-linked layer-by-layer (LbL) assembly. The LbL consists of layers of polyanion (polystyrenesulfonate, PSS) and polycation (polyallylamine hydrochloride, PAH), cross-linked with glutaraldehyde solution. The modified membranes were subsequently characterized in terms of morphology, FTIR, surface charge, pore size distribution, water permeability and salt rejection. The same modified membranes will then undergo FO performance test. In FO, draw solution of 0.5M MgCl2 and feed water of DI water were used. Bachelor of Engineering (Environmental Engineering) 2012-05-18T07:43:00Z 2012-05-18T07:43:00Z 2012 2012 Final Year Project (FYP) http://hdl.handle.net/10356/49444 en Nanyang Technological University 42 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Environmental engineering::Water treatment
spellingShingle DRNTU::Engineering::Environmental engineering::Water treatment
Tan, Si Hui.
Development of nanofiltration dual-layer hollow fiber membranes for forward osmosis
description Forward osmosis (FO) has been attracting growing attention in many applications in the recent years. FO has not been as well-studied as compared to pressure driven membrane process. The main advantages of FO include low or no hydraulic pressure, low tendency of fouling and high water recovery. The key challenges faced by FO are draw solution and the need for new membrane development. Therefore, the current study aims to fabricate nanofiltration dual-layer hollow fiber membranes suitable for FO applications.The provided polyamide-imide (PAI)/ polyethersulfone (PES) hollow fiber ultrafiltration (UF) substrates were cross-linked with 1% wt polyethylenimine (PEI) of different molecular weight at 70ᵒC for 75 mins to prepare the NF membrane. The PEI modified membranes were further modified with cross-linked layer-by-layer (LbL) assembly. The LbL consists of layers of polyanion (polystyrenesulfonate, PSS) and polycation (polyallylamine hydrochloride, PAH), cross-linked with glutaraldehyde solution. The modified membranes were subsequently characterized in terms of morphology, FTIR, surface charge, pore size distribution, water permeability and salt rejection. The same modified membranes will then undergo FO performance test. In FO, draw solution of 0.5M MgCl2 and feed water of DI water were used.
author2 Wang Rong
author_facet Wang Rong
Tan, Si Hui.
format Final Year Project
author Tan, Si Hui.
author_sort Tan, Si Hui.
title Development of nanofiltration dual-layer hollow fiber membranes for forward osmosis
title_short Development of nanofiltration dual-layer hollow fiber membranes for forward osmosis
title_full Development of nanofiltration dual-layer hollow fiber membranes for forward osmosis
title_fullStr Development of nanofiltration dual-layer hollow fiber membranes for forward osmosis
title_full_unstemmed Development of nanofiltration dual-layer hollow fiber membranes for forward osmosis
title_sort development of nanofiltration dual-layer hollow fiber membranes for forward osmosis
publishDate 2012
url http://hdl.handle.net/10356/49444
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